I Can’t Start My Mac
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I press the power button, and nothing happens. My Mac won't start.
What if my computer won't wake from sleep?
I turn on my computer and it only shows a persistent gray screen, an Apple logo, spinning gear, spinning globe, prohibitory sign, or a folder with a flashing question mark.
I turn on my computer and hear a series of beeps, or I see the power LED blinking a repeating pattern.
I turn on my Mac and see a blinking prohibitory symbol, a flashing question mark, or blinking folder.
How do I reset the PRAM or NVRAM?
Can I make things worse by doing repairs with DiskWarrior, TechTool Pro, or similar disk repair utilities?
When I start up my Mac it stays on a blue screen and never shows the desktop.
What is a “Safe Boot” and how do I use it?
How do I reset the System Management Controller (SMC) or Power Manager (PMU)?
